Screen for metallic fumes



(No Model.)

M. W. ILES.

SCREEN FOR METALLIC FUMES. No. 485,797. Patented Nov. 8, 1892.

wn'rn asses: mvanron:

UNITED STATES PATENT OFFICE.

MALVERN W. ILES, OF DENVER, COLORADO.

SCREEN FOR ME'TALLIC FUMES.

SPECIFICATION forming part of Letters Patent No. 485,797, dated November 8, 1892.

Application filed August 10, 1892. Serial No. 442,656- (No model.)

To all whom it may concern.-

Be it known that I, MALVERN W. ILES, of

Denver, county of Arapahoe, State of Colorado, have invented a certain new and useful Screen for Metallic Fumes, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to the screening of smoke from metallurgical furnaces,smelters, &c., for the purpose of separating and saving the metallic fumes and particles. This process is commonly practiced in the manufacture of oxide of Zinc, and also as described in the Lewis and Bartlett patents for saving and utilizing fumes of lead driven off from lead smelting and similar treatments.

In the screening of fumes from lead-smelters itis customary to use screensin the form of bags, and while I have successfully used bags made of muslin woolen bags are much more desirable and better fitted to withstand both the heat and the corrosive action of the acids in the smoke passed into them. I have discovered, however, that a screen of greater efficiency than either the muslin or woolen bags heretofore used, and also one which is practically as durable as the woolen bag, can be made by using a fabric in which the warp and Weft are of different materials, the one of woolen and the other of cotton, jute, or similar vegetable fiber. Preferably a material made of cotton-warp threads with a weft of wool is to be used. The advantage of this new screen is then not only that it is cheaper than screens all of wool, but also better than either woolen or cotton screens.

Reference being now had to the drawings, which illustrate my invention, Figure 1 is a sectional elevation showing a screen-bag and its connection with a fume-chamber and smoke-main, and Fig. 2 a diagram illustrating the fabric of which the bag is made.

A is the bag, which is secured at B by a Wire O to a beam in the chamber in which the groups of bags are situated.

The flooring of the chamber L is made of sheet-iron plates having thimbles D,to which the bottoms of the bags A are secured by a winding E and which open into the dust or fume-chambers G below the chamber L. The chambers G connect by openings I with conduits J, leading into a smoke-main K, which is connected with the furnace (not shown) in the usual well-known manner.

H H indicate doors by which the chambers G can be entered for the removal of the deposit-ed fume.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A screen for separating metallic fumes from furnace-smoke, consisting of a fabric having warp and weft threads, the one composed of wool and the other of vegetable fiber.

2. As a screen for separatiu g metallic fumes from furnace-smoke, a bagformed of a fabric having warp and weft threads, one composed of wool and the other of vegetable fiber.

MALVERN W. ILES.

Witnesses:

CLARENCE T. DYE, M. L. DUGAN. 

